In the first year of Tianqi, mechanisms thrived, and old and new political factions vied for power. Shen Wen, a scholar from Qinan Prefecture, was skilled in the art of woodworking mechanisms. One day, he unwittingly became involved in a case of theft of imperial treasures, which led him to meet Mu Siqing, the leader of the Jin Yi Wei. Shen Wen discovered that the treasure the Jin Yi Wei was searching for was the Six Harmony Beast Map, which had led to the extermination of his family years ago. Within the Six Harmony Beast Map lay the secrets of the dynasty. In order to find his family’s enemies and unravel the secrets of the map, Shen Wen decided to secretly infiltrate the Northern Garrison and search for the truth from years past.